A panda walks into a diner, pulls up a chair and orders a sandwich.
After he eats, he pulls out a gun, shoots the waiter and heads for the door.
The owner yells, "Hey...you just shot the waiter, and now you're gonna leave without paying the tab?"
The panda calls back: "I'm a panda, dude. Look it up!" and walks out.
The owner grabs a dictionary and looks up panda:
"A tree-climbing mammal of Asian origin, characterized by distinctive black and white coloring. EATS SHOOTS AND LEAVES." 
